Transcript DIF Lesson 05: Computer Maintenance Keep Software Up-To-Date • Patches Security Holes • Improves Software Stability • Improves Software Performance • Adds Features.

DIF
Lesson 05:
Computer
Maintenance
Keep Software Up-To-Date
• Patches Security Holes
• Improves Software Stability
• Improves Software
Performance
• Adds Features
Update Microsoft Windows
1. Open Internet Explorer and navigate to
http://www.microsoft.com
2. Click on “Microsoft Update”
3. Click “Express”
4. Follow the Instructions as they appear.
5. This process may require multiple
reboots and returns to microsoft.com
Disk Maintenance – Error Check
1. Go to “My Computer”, right-click on the C: drive,
and select “Properties”.
2. Click on the “Tools” tab.
3. Click “Check Now…” under Error-Checking.
4. Check “Automatically fix file system errors”.
5. Check “Scan for and attempt recovery of bad
sectors”.
6. Click “Start”.
7. This may not always work due to Windows not
having exclusive access to the drive, then schedule
it to run on reboot.
Disk Maintenance – Defragment
My Atomic Robo Collection is Fragmented
Disk Maintenance – Defragment
My Atomic Robo Collection Defragmented
Disk Maintenance – Defragment
A Fragmented Drive is an Inefficient Drive.
Disk Maintenance – Defragment
1. Go to “My Computer”, right-click on the C:
drive, and select “Properties”.
2. Click on the “Tools” tab.
3. Click “Defragment Now…” under
Defragmentation.
4. Click “Analyze”.
5. Click “View Report”. Note the percentage of
fragmentation.
6. Click “Defragment”.
Defragmentation and Error
Checking on Disks applies
to all disks, all hard drives
and all thumb drives. All of
these are subject to errors
and fragmentation.
Backups
• Documents, Music, Video and Games can all
be lost if your hard drive crashes or laptop
breaks.
• Regularly burn your libraries of files to CD,
DVD, or thumb drive.
• Store files online when possible. E-mail them
to yourself as an attachment or sign up for
free online storage.
Computer Viruses
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Fork Bomb
Computer Viruses
• Adware: plays advertisements after
software is installed
• Worms: self-replicating program that
copies itself across network nodes
• Rootkit: a concealed malicious
program (Sony Rootkit)
Computer Viruses
Beast Rootkit
Computer Viruses
• Spam: unsolicited e-mails,
sometimes fraudulent, attempts to
get personal details or recipient to
open file
• Spyware: collects information
without user’s knowledge
• Trojan Horse: pretend useful
software that is actually harmful.
Anna Kournikova Virus
• Sent Via E-mail as
“AnnaKournikova.jpg.vbs”
• Once Opened, it sends an
e-mail to everyone in the
recipient’s address book
with a copy of itself.
• Why do you think people
opened the file?
Computer Viruses
Watch out for file
extensions when
opening e-mails! Never
ever ever ever open
EXE, BAT, or VBS files.
Computer Viruses – AntiVirus Software
• AVG Free 8.5
• “Update Now”
• “Computer
Scanner>Scan
Whole
Computer”
Do This Every Week!!!
Computer Viruses –Firewalls
Prevents Outside Programs from accessing your
computer and Inside Programs from accessing
the Internet Unless Authorized.
Computer Viruses – Windows Firewall
• “Control Panel >
Windows Firewall”
• Only allow
exceptions for
program you
installed or
recognize as safe.
Account Management
• Go to “Control Panel>User Accounts”
• Click on “Guest Account” and then
click “Turn On the Guest Account”
• This way you can let friends use your
computer without messing anything
up.
Account Management
• Click on “Create New Account”
• Name it “support”
• Pick “Computer administrator” for the
account type and click “Create Account”
• Let an Instructor choose the password.
• This will give us a way into your
computer in case you mess it up.
Account Management
• Click on “Admin” click “Create a
password”
• VERY IMPORTANT: If you forget
your Admin password:
YOU ARE OUT OF LUCK!!!!